I am looking at gas slotted an dimpled EBC rotors. I tow a very heavy 5th wheel (14K) and need new pads and rotors while I save $ for a trans upgrade and an ehaust brake. Can these rotors be turned when these pads wear out and how are they at handling heat and not warpping? I am looking at PFC carbon metalic pads to use with them. I know it's not the ultimate set up but I am saving for a EB.